LYMN^HXE OF NORTH AMERICA. 



445 



TYPES: Two specimens, Smith. Inst, No. 118626. 



TYPE LOCALITY: Willamette (Wahlamat) near its junction with 

 the Columbia River, Oregon. 



ANIMAL, JAW, RADULA and GENITALIA : Not examined. 



RANGE: (Figure 50). Northern part of the lower peninsula of 

 Michigan (86) west to Western Washington; Ontario south to South- 

 ern Wyoming and South Dakota. 



Distribution of 



API GIN A 

 * PBEBLEI 



FIG. 50. 



Apicina is an inhabitant of about the same drainage area as bin- 

 neyi (Great Lakes, Columbia and Missouri rivers). It occupies the 

 Canadian, Columbian and a part of the Upper Mississippian regions. 

 It is also typical of the Boreal (Canadian) and Transition life zones. 

 In fact, both binneyi and apicina may be said to occupy a strip of ter- 

 ritory ten degrees in width from Michigan to Washington. The 41st 

 parallel marks its known southern range while the 50th parallel marks 

 its northern extension. 



RECORDS. 

 UNITED STATES. 



MICHIGAN: Union River, Ontonagon Co. (Ruthven; Walker); Mulletts 

 Lake, Sheboygan Co. (Walker) ; shore of Lake Superior, Ontonagon Co. ; Me- 

 nominee River, Dickinson Co. ; Twin Falls, Brule River and Midhigamme River, 

 Iron Co.; middle and lower beach, Lake Superior (Walker and Ruthven). 



MONTANA: Madison Co. (G. P. Merrill). 



OREGON : Willamette River, near its junction with the Columbia River, 

 Columbia Co. (Lea; Nuttall). 



